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Guidance

Form UKF: guidance

Guidance to register as a British citizen if you were born to a British father and your parents were not married.

Updates to this page

From:
UK Visas and Immigration
Published:
22 March 2019
Last updated:
10 August 2026
Show all updates

  1. Updated guidance in the following sections: 'Applying to register as a British citizen if you were born to a British father (and your parents were not married)' and 'Citizenship-related queries'.

  2. Updated application processing times and information on returning your biometric residence permit (BRP).

  3. Updated the section 'Travelling to and from the UK after becoming a British citizen'.

  4. Updated guidance to clarify: references to the applicant and deprivation of citizenship; registration under the BOTC(F) route; how someone became a British citizen; the definition of parents for nationality purposes; evidence of paternity; and application refusal due to not attending a ceremony within 90 days.

  5. Updated information on citizenship queries and ceremonies, the Immigration Advice Authority and added a new section on 'Next steps'.

  6. Page summary amended to reflect the fact that form UKF can now be used by both people born before and after 1 July 2006.

  7. Updates to fees links and travel advice after becoming British.

  8. Document format and style updated. Outdated information removed or updated accordingly. References and links to fees updated.

  9. Updated the guidance.

  10. Added accessible version of guide.

  11. Updated guidance document published.

  12. First published.

Documents

Form UKF: guidance (accessible version)

HTML

Form UKF: guidance

PDF, 311 KB, 23 pages

Details

Read the UKF guidance to find out if you can register as a British citizen if you would have become a British citizen automatically if your parents had been married.

Register as a British citizen (form UKF)

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